Google's Halloween Easter Eggs explain how to defeat a skeleton, what a witch likes to eat and how to avoid the Grim Reaper. Photograph: Alexey Romanov/Alamy

Google has injected a few fun Easter eggs into its search for Halloween including facts about what witches eat and how to defeat the Grim Reaper.

Searching for terms such as “ghost”, “witch”, “skeleton” and “Grim Reaper” now produces new amusing hidden messages taking the form of Halloween-themed fact boxes along with the traditional Google search results.

The interesting little Easter eggs flow from new entries in Google’s Knowledge Graph – an encyclopaedia of about 570m concepts and relationships that allows Google to anticipate facts and figures users might want to know about their search term.

Google's Halloween Easter Eggs explain what a skeleton likes to eat, where it came from and how to defeat one

It is unknown precisely how many of thes Easter eggs that Google has inserted into the encyclopaedia, but there are at least 10 to find, each with their own interesting results.

• In September, Google boosted the prominence and effectiveness of its Knowledge Graph as part of its Hummingbird update, which made its core search better at answering longer, more complex and spoken queries